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Abstract: A
six degrees of freedom (6-DOF) vehicle motion simulator has been
researched. The theoretic and experimental study of the servo system is
done, which uses the four-way valve to control the asymmetric hydraulic
cylinder. The relation among area grades of valve hatch is discussed,
when the speed difference between forward and reverse motion and the
pressure jump are dispelled taking into account the load. The
expressions calculating area grade of asymmetric servo valve is derived.
Based on above, the coordinated control to six hydraulic servo systems
is researched. The result shows that the platform can smoothly move, the
synergetic ability of each DOF is good and its performance meets the
requirement of the vehicle motion simulation.
Key words: 6-DOF
Stewart platform Coordinated control Asymmetric servo valve
Vehicle motion simulation
CLC No: TH137.32
TP271.31
国防军工资助项目(200206001).
Received 30211, received in revised form 20030828
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